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Q&A

Posts tagged galactic

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Q&A What would the sky view be like of a final stage massive merged galaxy?

What will be the view of the sky and the distances between stars, living on a planet or in a habitat in a super galaxy that has merged with all its nearby galaxies in its cluster, at a time in the ...

1 answer  ·  posted 2y ago by RandySavage‭  ·  last activity 2y ago by HDE 226868‭

Question astronomy galactic
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Q&A Can a galaxy be formed from a black hole?

I'm writing creative text and I'm curious to know, just as possibility, can a galaxy by any chance be formed out of a black hole?

3 answers  ·  posted 2y ago by 01e5Dk‭  ·  last activity 2y ago by 01e5Dk‭

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Q&A Could a galaxy of Nicoll-Dyson beams hit a single target?

This was an idea for a flashback as I pick up my story around 100 trillions years from now at the point where star formation is ceasing and the red dwarf and stellar remnant era begins. Now living ...

2 answers  ·  posted 2y ago by RandySavage‭  ·  last activity 2y ago by RandySavage‭

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Q&A How far above the galactic plane could an Earth-like planet develop?

I was zooming around on Space Engine and came across the moon of a gas giant that was hovering well above the galactic plane. I'm admittedly not well-versed in under what conditions an Earth-like p...

1 answer  ·  posted 2y ago by Vigilant‭  ·  last activity 2y ago by Vigilant‭

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Q&A What percentage of stars would need to become Shkadov thrusters to move the whole galaxy?

The advanced civilization in my story is trying to reach as many galaxies as possible in the next few billions years before the expansion of space has sent those galaxies permanently out of reach w...

1 answer  ·  posted 2y ago by RandySavage‭  ·  last activity 2y ago by RandySavage‭

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Q&A Could habitable planets form in an ultracompact galaxy?

I am wondering if habitable planets could form around stars in super dense dwarf galaxies. There are some super dense galaxies such as M60-UCD1 and M85-HCC1 which can have a typical distance betwee...

2 answers  ·  posted 2y ago by RandySavage‭  ·  last activity 2y ago by RandySavage‭

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Q&A What would the geologic record look like on a planet in the galactic halo?

Imagine an Earth-like planet orbiting a Sun-like star in the inner halo of the Milky Way. As a halo star, it will likely be somewhat metal-poor, having formed early in the life of the galaxy, but o...

3 answers  ·  posted 3y ago by HDE 226868‭  ·  last activity 3y ago by HDE 226868‭

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Q&A What would the view from a spaceship traveling through inter-galactic space look like?

My character is traveling aboard a spaceship through inter-galactic space (it has left the Milky Way). The ship is traveling at the speed of light or so and has been for the last six thousand years...

1 answer  ·  posted 3y ago by marmel‭  ·  last activity 3y ago by marmel‭

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Q&A Randomly generating plausible star types for a synthetic galaxy?

I'd like to randomly generate between 1 and 20 million stars for a spiral galaxy resembling our Milky Way. This is of course far fewer than our galaxy (estimated between 150 to 300 billion), but I'...

2 answers  ·  posted 3y ago by John O‭  ·  last activity 3y ago by John O‭

Question stars galactic
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Q&A Life on planets near quasars

To be very-very simple: The very main setting of my world is a very special and very small galaxy, the galactic core of which is a quasar - with the "iconic" light beam in the middle, serving a sp...

4 answers  ·  posted 6y ago by Zoltán Schmidt‭  ·  last activity 3y ago by Zoltán Schmidt‭

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Q&A How could a planet have a sky without stars at night?

Is it possible for a planet in our part of the galaxy to have a night without stars? I'm looking for some kind of natural phenomena that would hide the stars, but allow the sun to rise and fall as...

24 answers  ·  posted 4y ago by Reactgular‭  ·  last activity 4y ago by Reactgular‭

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Q&A What would the night sky look like for a world on the upper plane of the galaxy, near its rim?

I would like to include a world in a story that is located on the upper plane (or bottom, doesn't matter, but call it upper for the sake of reference) of the galaxy. If you think of the galaxy as ...

3 answers  ·  posted 4y ago by JBH‭  ·  last activity 4y ago by JBH‭

Question planets galactic
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Q&A How could someone ground a breathable synthetic atmosphere onto a small asteroid?

Let's say there are billions of asteroids in the galaxy, varying in size from baseballs to hunks of rock almost big enough to be dwarf planets. If someone wanted to set up a habitable location on o...

6 answers  ·  posted 4y ago by The Weasel Sagas‭  ·  last activity 4y ago by The Weasel Sagas‭

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Q&A Can my spaceship figure out its position using Cepheid Variables?

In my story, reasonably far in the future, an intrepid group of explorers are on the first manned mission to the Andromeda galaxy, travelling close to the speed of light. They slumbered in suspende...

6 answers  ·  posted 4y ago by HDE 226868‭  ·  last activity 4y ago by HDE 226868‭

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Q&A What would happen if the black hole at the center of a galaxy was removed?

Say you have a galaxy, possibly ours, with a central black hole. In an instant the black hole falls through a plot hole and vanishes. What happens to the rest of the galaxy? Does everything keep ...

4 answers  ·  posted 7y ago by AndyD273‭  ·  last activity 4y ago by AndyD273‭

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Q&A Tiny galaxies with exoplanets

Segue 2 is a galaxy with only about 1000 stars and is 111 light years in radius. It has a light output only 900 times that of our sun. (This is a real galaxy in our universe) However, I want my fi...

2 answers  ·  posted 4y ago by P.Lord‭  ·  last activity 4y ago by P.Lord‭

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Q&A Where in the galaxy would one find the most heavier elements?

I'm trying to flesh out the history of a fictional galactic society, specifically the initial settlements and inhabited worlds. Something that I thought would be important to settlers would be an a...

3 answers  ·  posted 6y ago by DaaaahWhoosh‭  ·  last activity 4y ago by DaaaahWhoosh‭